MONROE, a city of Louisiana, U.S.A., the capital of Ouachita parish, in the northern part of the state, on the east bank of the Ouachita river, 72 m.
Across the Ouachita is the town of West Monroe (pop. in 1900, 775).
In 1785, during the Spanish occupation of Louisiana, Juan Filhiol, commandant of the district of Ouachita, founded a settlement on the site of the present Monroe, which was called Ouachita Post until 1790 and then Fort Miro, in honour of the governor-general.
The northern part can best be regarded as a low plateau (once marine sediments) sloping southward, traversed by the large diluvial valleys of the Mississippi, Red and Ouachita rivers, and recut by smaller tributaries into smaller plateaus and rather uniform flat-topped hills.
Through and along the border of the state, the Red river, the Ouachita (or Washita), Sabine and Pearl; all except the last are navigable at all stages of the water.
These flood plains form collectively what is known as the alluvial region, which extends in a broad belt down the Mississippi, from the mouth of the Ohio to the Gulf of Mexico, and up the Ouachita and its branches and the Red river to and beyond the limits of the state.
Its breadth along the Mississippi within Louisiana ranges from to to 50 or 60 m., and that along the Red river and the Ouachita has an average breadth of to m.
In the same way the western side of the em- Mississippi ~ayment, trending south and south-west, passes along the Emba.vmeni.lower south-eastern side of the dissected Ozark plateau of southern Missouri and northern Arkansas, which in many ways resembles the Appalachian plateau, and along the eastern end of the Massern ranges of the Ouachita mountain system in central Arkansas, which in geological history and topographical form present many analogies with the ridges and valleys of the Appalachians; and as the coastal plain turns westward to Texas it borders the Arbuckle hills in Oklahoma, a small analogue of the crystalline Appalachian belt.
Rise the subdued forms of the Wichita MountaiIis in Oklahoma, the westernmost member of the Ouachita system.
These lands perhaps lay in the present - position of the Ouachita Mountains.
Nine other considerable streams drain the state; of these, the Red, the Ouachita, the White and the St Francis are the most important.
South of the river are the Ouachita Mountains, and north of it are the Boston Mountains.
The Ouachita Mountains are characterized by close folding and faulting.
==Flora== Arkansas lies in the humid, or Austroriparian, area of the Lower Austral life-zone, except the highlands of the Ozark uplift and Ouachita Mountains, which belong to the humid, or Carolinian, area of the Upper Austral.
This river was reached early in 1541, and the following winter was spent on the Ouachita, in modern Arkansas and Louisiana, west of the Mississippi.
A creek, flowing through the valley but walled over, empties into the Ouachita river several miles from Hot Springs.
Of the Ouachita Mountains.
Among the large denominational colleges are Philander Smith College, Little Rock (Methodist Episcopal, 1877); Ouachita College, Arkadelphia (Baptist, 1886); Hendrix College, Conway (Methodist Episcopal, South, 1884); and Arkansas College, Batesville (Presbyterian, 1872).